Who said "I'm built for this. It's what I was made to do."?

This quote is attributed to Black Widow / Natasha Romanoff.

I'm built for this. It's what I was made to do. - Black Widow / Natasha Romanoff

"I'm built for this. It's what I was made to do."

Black Widow / Natasha Romanoff Work

"I used to have nothing. Then I got this job, this team. It's all I have."

"Compromise where you can. Where you can't, don't."

"I'm always picking up after you boys."

"The world doesn't change without sacrifice."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."